Column to JCUDF row for strings

[hyperbolic2346]

Is your feature request related to a problem? Please describe.
Now that the row offset iterator is written, the next step in getting strings converted in the row to column and column to row code is to implement one side. This is the implementation issue for the column to row portion of the work. This will accept a table with string columns in it and convert it into the JCUDF row format for the spark-rapids plugin.

Describe the solution you'd like
The kernel will break up the work with a warp doing a single row. The 0th thread of the warp will write the offset/length of the data and then all threads will participate in the memcpy_async call to copy the actual string data.

Describe alternatives you've considered
Other methods to parallelize the work were considered including trying to break it up where each thread would copy a specific number of bytes to the proper destination. This would result in lower_bound calls to try and figure out the destination for the data and had issues with data chunks spanning multiple destinations. The complexity of this approach led us to the current solution in the interest of time.

Additional context
This is part of the larger feature of #10033

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